Last I checked, the Savage small shank and Remington barrels have the same thread diameter, with a different pitch. Only way thats going to work is cutting off the threaded portion of the shank and starting over - re-thread, and re-chamber, the works. Any competent gunsmith with a lathe should be able to do it, but I have a feeling its going to be false economy unless you are *really* attached to this take-off barrel for some reason.
Sell the Remington barrel to an un-believer and buy a new pre-threaded & chambered barrel... thats my advice.
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